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Water pollution control planning for the Taizi River watershed

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Journal of environmental Sciences 1996年第1期8卷 110-119页

作者： Jiang Weigong Sun Hong(Benxi environmental monitoring {2., Liaoning Province ,Benxi 11702.,china)Guo Huaicheng Song Guojun (Center for environmental Sciences,Peking University.Beijing 100871.china) Benxi Envmtl Stat Liaoning Province Benxi China China

Water pollution control planning for the Taizi River watershed,a typical Chinese case study,is presented in this paper. Based on comprehensive *** quality in the watershed was assessed and predicated;water quality models for the river and reservoir were built;and function of water bodies and environmental assimilative capacity were determined ;and then the planning for industrial pollution sources and concentrated sewage treatment were made respectively.

关键词： water pollution control planning water quality model benefit-cost analysis.

Comparison of temporal and Spatial Characteristics of Ozone Pollution at Ground Level in the Eastern china

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Chinese Journal of Population,Resources and Environment 2006年第3期4卷 51-57页

作者： Liu Houfeng1,2.1. Shandong Normal University, jinan 2.0014, china 2. Chinese Research Academe of {2. Sciences, Beijing 100012. china Shandong Normal University Chinese Research Academe of environmental Sciences

monitoring data from ozone（O3） automatic stations in three typical cities with different climatic areas in the southern and northern parts of eastern{2. are used to analyze temporal and spatial characteristics of ozone pollution at ground level. The results show that ozone pollution level has distinct regional differences and the concentration in the suburbs is higher than that in the urban areas. The seasonal variation of ozone concentration in different climatic areas is greatly affected by the variation of precipitation. Ozone concentration in Shenyang and Beijing , in the temperate zone, has one perennial peak concentration, occurring in early summer, May or June. Ozone concentration in Guangzhou, in sub-tropical zone, has two peak values year round. The highest values occur in October and the secondary high value in June. The ozone season in the south is longer than that in the north. The annual average daily peak value of ozone concentrations in different climates usually occur around 3 pm. The diurnal variation range of ozone concentration declines with the increase of latitude. Ozone concentration does not elevate with the increase of traffic flow. Ozone concentration in Guangzhou has a distinct reverse relation to CO and NOx. This complicated non-linearity indicates that the equilibrium of ozone photochemical reaction has regional differences. Exceeding the rate of Beijing＇s lh ozone concentration is higher than that of Guangzhou, whereas the average 8h ozone level is lower than that of Guangzhou, indicating that areas in low latitude are more easily affected by moderate ozone concentrations and longer exposure. Thus,{2. should work out standards for 8h ozone concentration.

关键词： ozone temporal and spatial characteristics 8h concentrations weekly variation

Analysis of chemical composition of precipitation in a typical background site

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Journal of environmental Sciences 1998年第3期10卷 70-78页

作者： Liu Jiaqi, Shi LiliYunnan Provincial environmental monitoring Center {2., Kunming 650034, china

background precipitation in Lijiang, china was investigated. Results showed that the chemical composition of atmospheric background precipitation mainly comes from fly ash and continental atmospheric transfer, and does not have any obvious correlation with oceanic aerosol, taking Amsterdam in the Pacific Ocean and St. Georges in the Atlantic Ocean and Katherine, Australia as examples for analysing. 

关键词： fly ash background precipitation chemical composition. 

Existing Problems in Energy Exploitation and Eco-environment Sustainable Development and Their Countermeasures in Northern Shaanxi

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Meteorological and environmental Research 2011年第4期2卷 76-78页

作者： GUO Jun-quan1, YANG Zhi-guo2.1. Department of Agriculture and Forestry Architecture, Yan’an Vocational and Technical College, Yan’an 716000, china 2. Yanan Municipal environmental Protection {2. station, Yan’an 716000, china

The exploitation of coal, petroleum and natural gas in northern Shaanxi not only promoted the rapid development of economy, but also brought about enormous pressure to fragile ecology and resulted to severe water pollution, water and soil loss, vegetation destruction and other ecological environmental problems, so many countermeasures were put forward according to these problems, such as greatly developing circular economy, conducting cleaner production in petroleum enterprises, continuously renewing mining technology and so on.

关键词： Ecological environment Sustainable development Water pollution Circular economy Northern Shaanxi china

Studies on the regional feature of organic carbon in sediments off the Huanghe River Estuary waters

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Acta Oceanologica Sinica 2004年第1期23卷 129-134页

作者： YUAN Huamao1, 2. LIU Zhigang3, SONG Jinming1, L Xiaoxia1, 2. LI Xuegang1, 2. LI Ning1, 2. ZHAN Tianrong1, 2.. MEES, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 2.6071, china2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, china3. Zhoushan Marine Eco-{2. monitoring station of Zhejiang Province, Zhoushan 316004, china MEES Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China

Organic carbon (OC) in definitely small area sediments(according to marine dimension)off the Huanghe River Estuary is investigated in order to evaluate the feature of regional difference of physical and chemical properties in marginal sea *** distributions of OC in sediments with natural grain size and the relationship with the pH,Eh ,Es and Fe3+/Fe2. are *** addition,OC decomposition rates in surfacial/subsurfacial sediments are *** concentrations range from 0.2.% to 1.8%(wt)in the study area. Significant differences in OC content and in horizontal distribution as well as various trends in surfacial /subsurfacial sediments exhibit the feature of regional difference remarkably in marginal sea sediments. The complicated distribution of OC in surface sediments is due to the influence of bacterial activity and abundance, bioturbation of benthos and physical disturbance. The OC decomposition rate constant in surfacial /subsurfacial sediments ranges from 0.009 7 to 0.076 a-1 and the relatively high values may be mainly related to bacteria that are mainly responsible for OC mineralization;meio-and macrofauna affect OC degradation both directly, through feeding on it, and indirectly through bioturbation and at the same time coarse sediments are also disadvantageous to OC *** almost all the middle and bottom sediments the contents of OC decrease with the increase of deposition depth, which indicates that mineralization of OC in the middle and bottom sediments has occurred via processes like SO reduction and Fe-oxide reduction.

关键词： regional feature organic carbon sediments Huanghe River Estuary

Restoration processes of pollution zones in Hanjiang River

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Journal of environmental Sciences 1996年第2期8卷 178-184页

作者： Shen Yunfen Tan Yuyun Feng Weisong Gu Manru (Institute of Hydrobiology, Chinese Academy of Sciences, Wuchang 430072. china) He Chengying (environmental Protection {2. of Xiantao City ,china) Li Aiguo (environmental Protection {2. of Xiangfan Ci Institute of Hydrobiology Chinese Academy of Sciences Wuchang 430072 China environmental Protection station Xiantao City China environmental Protection station Xiangfan City China

Two pollution zones in middle and lower reaches of Hanjiang River were selected for studying restoration processes. In each zones 6 stations were set up in upper stream of sewage outfall, 50m, 100 or 150m, 2.0 or 52.m and 12.0 or 3500m apart from the outfall. Chemical monitoring and microbial community biomonitoring were carried out simultaneously. Either the chemical monitoring or the biological monitoring proved the self-purification process of water body along with the increased distance from the sewage outfall. 4 biological parameters (species number of protozoa, percentage of phytomastigophora, diversity index and heterotrophy index) and parameter Seq of the colonization process all have statistically significant correlations with chemical comprehensive pollution indexes Pa and Pb.

关键词： restoration process microbial community biomonitoring river pollution zone.

Application　of　face－graph　in　heavy　metal　pollution　assessment　in　river　sediment

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Journal of environmental Sciences 1994年第2期6卷 206-214页

作者： Jia Zhenbang Zhao Zhijie(Geography Department, Peking University,Beijing 100871, china)Zhang Hui(Chinese Research Academy of environmental Sciences,Beijing, china)Zhang Baoquan Zhao Lihua(environmental Protection Survey station, Benxi, china)

On the basis of sedimentation principles and environmental chemical characteristics of heavymetal, combine international new methods-face graph on heavy metal pollution assessment withmulti-variable graph expression, the article made a synthetical assessment study on state of heavymetal pollution and potential ecological risk of Taizi River sediment in Benxi City reach. The re-sults of the study indicated that the state of heavy metal pollution of Taizi River in Benxi Cityreach is very serious, appropriate counter measures should be taken.

关键词： face graph heavy metal pollution sediment potential ecological risk index.

Regional air quality prediction models using the knowledge－based system approach

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Journal of environmental Sciences 1995年第1期7卷 66-73页

作者： Du Min Bai Naibin Yao Guian(Research center for Eco-environmental Sciences,Chinese Academy of Sciences,Beijing 100085,china)Yuan Jiwen Shen Baoling(Tianjin environmental monitoring Center,Tianjin 300191,china) Rsch Ctr for Eco-Envmtl Sciences Chinese Academy of Sci Beijing China China

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Ｒｅｇｉｏｎａｌａｉｒｑｕａｌｉｔｙｐｒｅｄｉｃｔｉｏｎｍｏｄｅｌｓｕｓｉｎｇｔｈｅｋｎｏｗｌｅｄｇｅ－ｂａｓｅｄｓｙｓｔｅｍａｐｐｒｏａｃｈＤｕＭｉｎ；ＢａｉＮａｉｂｉｎ；ＹａｏＧｕｉａｎ（ＲｅｓｅａｒｃｈｃｅｎｔｅｒｆｏｒＥｃｏ－Ｅｎｖｉｒｏｎｍ...

关键词： expert system air quality assessment knowledge-based systems.

Major ingestion pathways of arsenic in endemic arsenosis areas in Guizhou Province, china

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Chinese Science Bulletin 1999年第S2期44卷 69-70页

作者： ZHENG Baoshan~1, DING Zhenhua~1, ZHU Jianming~1, ZHOU Daixing~2.and ZHOU Yunshu~2.1. State Key Laboratory of environmental Geochemistry, Institute of Geochemistry, Guiyang, Guizhou 550002. china 2. Sanitation and Anti-epidemic {2. of Qianxinan Autonomous Prefecture, Xingyi, Guizhou 562.00, china State Key Laboratory of environmental Geochemistry Institute of Geochemistry Guiyang Guizhou 550002 China Sanitation and Anti-epidemic station of Qianxinan Autonomous Prefecture Xingyi Guizhou 562400 China

ARSENIC-poisoning occurring in agricultural areas in southwestern Guizhou Province, china, has been aproblem for half a century. By 1998, over 3000 cases of arsenic poisoning had been identified and morethan 100 000 people from 6 counties were under threat. In 1992.1993, samples of coal, rocks,soil, surface water, ground water, air and food such as chili peppers were collected in endemic and control areas. Samples of urine, blood and hair were also collected from arsenic-poisoned patients as well ashealthy population in a control area. Arsenic content of the samples was determined by Ag-DCCmethod.

关键词： arsenic coal arsenosis ingestion pathways.